"Check Filler Cap" mystery solved...

[MrFixIt]

Since I've completed a bunch of work on the engine three weeks ago, I have been getting the CFCap message almost every time I start the X. The message would stay on for only a few seconds, and it might repeat a few times if I don't reset the gas cap (new). The X runs great and was not effected by CFC message.

Today the SES P0455 Evap Large Leak showed up. I thought for sure it was a bad (new) gas cap, but confirmed it wasn't the gas cap.

Spent hours searching and reading this site today. What caught my attention was the "Fuel Tank Breather Valve" located at the front of the engine on the driver's side.

I had to remove this unit when I did the upper timing chain gasket. To make a long story short, I thought the C-clamp hose was on tight and all the way in--it wasn't (smacking myself).

I gently pulled on the c-clamp to check it. The hose came right off as if it wasn't attached to the valve.

That sumbi*ch was so hard to get on properly. Had to press the c-clamp so hard my thumb is still sore. It took 20 minutes of grunting to hear that magical click...it's properly installed. (I must have had a brain fart when did it last month)

What I learned today is that the SES fault code P0455 and "Check Filler Cap" messages are not always about the gas cap like it is written on the gas cap.

Erased the fault code, started up the X, and no more CFC messages. So far no CFC after 7 starts and shut downs. All is good.

Thanks Xoutpost!